package cn.mxlshy.springcloud.controller;

import cn.mxlshy.springcloud.loadbalance.LoadBalancer;
import entities.CommonResult;
import entities.Payment;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author: 马晓亮
 * @date: 2020/8/4 16:18
 * @description:
 */
@RestController
@Slf4j
public class OrderController {
    @Resource
    private RestTemplate restTemplate;
    @Resource
    private LoadBalancer loadBalancer;
    @Resource
    private DiscoveryClient discoveryClient;

    //    public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment) {

        return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB() {
        List<ServiceInstance> instanceList = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if (instanceList == null ||  instanceList.isEmpty()) {
            return null;
        }
        ServiceInstance serviceInstance = loadBalancer.instances(instanceList);
        URI uri = serviceInstance.getUri();
        System.out.println(uri.toString());
        return restTemplate.getForObject(uri + "/payment/lb", String.class);

    }
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin() {
        return restTemplate.getForObject("http://localhost:8001/payment/zipkin", String.class);
    }
}
